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Halo Structure of 6He Analyzed via Ab Initio Correlations

Published:Dec 30, 2025 10:13
1 min read
ArXiv

Analysis

This paper investigates the halo structure of 6He, a key topic in nuclear physics, using ab initio calculations. The study's significance lies in its detailed analysis of two-nucleon spatial correlations, providing insights into the behavior of valence neutrons and the overall structure of the nucleus. The use of ab initio methods, which are based on fundamental principles, adds credibility to the findings. Understanding the structure of exotic nuclei like 6He is crucial for advancing our knowledge of nuclear forces and the limits of nuclear stability.
Reference

The study demonstrates that two-nucleon spatial correlations, specifically the pair-number operator and the square-separation operator, encode important details of the halo structure of 6He.

Neutron Star Properties from Extended Sigma Model

Published:Dec 29, 2025 14:01
1 min read
ArXiv

Analysis

This paper investigates neutron star structure using a baryonic extended linear sigma model. It highlights the importance of the pion-nucleon sigma term in achieving realistic mass-radius relations, suggesting a deviation from vacuum values at high densities. The study aims to connect microscopic symmetries with macroscopic phenomena in neutron stars.
Reference

The $πN$ sigma term $σ_{πN}$, which denotes the contribution of explicit symmetry breaking, should deviate from its empirical values at vacuum. Specifically, $σ_{πN}\sim -600$ MeV, rather than $(32-89) m \ MeV$ at vacuum.

Analysis

This article reports on research concerning three-nucleon dynamics, specifically focusing on deuteron-proton breakup collisions. The study utilizes the WASA detector at COSY-Jülich, providing experimental data at a specific energy level (190 MeV/nucleon). The research likely aims to understand the interactions between three nucleons (protons and neutrons) under these conditions, contributing to the field of nuclear physics.
Reference

The article is sourced from ArXiv, indicating it's a pre-print or research paper.

Analysis

The article focuses on the equation of state for neutron stars, specifically considering nucleon short-range correlations. It presents a review of the topic and highlights open issues, suggesting a research-oriented focus. The source being ArXiv indicates a scientific or academic context.
Reference

Analysis

This paper addresses the crucial problem of modeling final state interactions (FSIs) in neutrino-nucleus scattering, a key aspect of neutrino oscillation experiments. By reweighting events in the NuWro Monte Carlo generator based on MINERvA data, the authors refine the FSI model. The study's significance lies in its direct impact on the accuracy of neutrino interaction simulations, which are essential for interpreting experimental results and understanding neutrino properties. The finding that stronger nucleon reinteractions are needed has implications for both experimental analyses and theoretical models using NuWro.
Reference

The study highlights the requirement for stronger nucleon reinteractions than previously assumed.

Sub-GeV Dark Matter Constraints from Cosmic-Ray Upscattering

Published:Dec 29, 2025 08:10
1 min read
ArXiv

Analysis

This paper addresses the challenge of detecting sub-GeV dark matter, which is difficult for traditional direct detection experiments. It proposes a novel mechanism, cosmic-ray upscattering, to boost the DM particles to detectable velocities. The study analyzes various DM-nucleon interaction models and derives constraints using data from existing experiments (LZ, XENON, Borexino). The results extend the reach of direct detection into the sub-GeV regime and highlight the importance of momentum dependence in light-mediator scenarios. This is significant because it provides new ways to search for dark matter in a previously unexplored mass range.
Reference

The paper derives constraints on the coupling parameters using data from the LZ, XENON, and Borexino experiments, covering mediator mass from $10^{-6}$ to $1$ GeV.

Unified Study of Nucleon Electromagnetic Form Factors

Published:Dec 28, 2025 23:11
1 min read
ArXiv

Analysis

This paper offers a comprehensive approach to understanding nucleon electromagnetic form factors by integrating different theoretical frameworks and fitting experimental data. The combination of QCD-based descriptions, GPD-based contributions, and vector-meson exchange provides a physically motivated model. The use of Padé-based fits and the construction of analytic parametrizations are significant for providing stable and accurate descriptions across a wide range of momentum transfers. The paper's strength lies in its multi-faceted approach and the potential for improved understanding of nucleon structure.
Reference

The combined framework provides an accurate and physically motivated description of nucleon structure within a controlled model-dependent setting across a wide range of momentum transfers.

Analysis

This paper proposes a factorized approach to calculate nuclear currents, simplifying calculations for electron, neutrino, and beyond Standard Model (BSM) processes. The factorization separates nucleon dynamics from nuclear wave function overlaps, enabling efficient computation and flexible modification of nucleon couplings. This is particularly relevant for event generators used in neutrino physics and other areas where accurate modeling of nuclear effects is crucial.
Reference

The factorized form is attractive for (neutrino) event generators: it abstracts away the nuclear model and allows to easily modify couplings to the nucleon.

Differentiable Neural Network for Nuclear Scattering

Published:Dec 27, 2025 06:56
1 min read
ArXiv

Analysis

This paper introduces a novel application of Bidirectional Liquid Neural Networks (BiLNN) to solve the optical model in nuclear physics. The key contribution is a fully differentiable emulator that maps optical potential parameters to scattering wave functions. This allows for efficient uncertainty quantification and parameter optimization using gradient-based algorithms, which is crucial for modern nuclear data evaluation. The use of phase-space coordinates enables generalization across a wide range of projectile energies and target nuclei. The model's ability to extrapolate to unseen nuclei suggests it has learned the underlying physics, making it a significant advancement in the field.
Reference

The network achieves an overall relative error of 1.2% and extrapolates successfully to nuclei not included in training.

Physics#Nuclear Physics🔬 ResearchAnalyzed: Jan 3, 2026 23:54

Improved Nucleon Momentum Distributions from Electron Scattering

Published:Dec 26, 2025 07:17
1 min read
ArXiv

Analysis

This paper addresses the challenge of accurately extracting nucleon momentum distributions (NMDs) from inclusive electron scattering data, particularly in complex nuclei. The authors improve the treatment of excitation energy within the relativistic Fermi gas (RFG) model. This leads to better agreement between extracted NMDs and ab initio calculations, especially around the Fermi momentum, improving the understanding of Fermi motion and short-range correlations (SRCs).
Reference

The extracted NMDs of complex nuclei show better agreement with ab initio calculations across the low- and high-momentum range, especially around $k_F$, successfully reproducing both the behaviors of Fermi motion and SRCs.

Analysis

This article, sourced from ArXiv, likely presents novel research findings in nuclear physics. The study focuses on the fragmentation of neutron-rich carbon isotopes, a topic crucial for understanding nuclear structure and reactions.
Reference

The study investigates fragmentation on light targets at 27.5 MeV/nucleon.

Research#llm🔬 ResearchAnalyzed: Jan 4, 2026 07:48

Connected and disconnected contributions to nucleon form factors and parton distributions

Published:Dec 24, 2025 00:16
1 min read
ArXiv

Analysis

This article likely discusses the theoretical aspects of nucleon structure, focusing on how different components contribute to observable properties. The terms 'connected' and 'disconnected' suggest an analysis of different interaction pathways within the nucleon.

Key Takeaways

    Reference

    Research#nuclear physics🔬 ResearchAnalyzed: Jan 4, 2026 07:13

    Exploring quark mass dependent three-nucleon forces in medium-mass nuclei

    Published:Dec 23, 2025 15:49
    1 min read
    ArXiv

    Analysis

    This article likely discusses research on nuclear physics, specifically focusing on the impact of quark masses on the interactions between three nucleons within medium-mass nuclei. The research likely uses theoretical models and computational methods to understand the behavior of atomic nuclei.

    Key Takeaways

      Reference

      Analysis

      This article proposes a novel method to investigate dark matter using multi-messenger astronomy and ultra-high energy cosmic rays, bridging particle physics and astrophysics. The significance lies in potentially unveiling the nature of dark matter through combined observational approaches.
      Reference

      The study focuses on the interactions between dark matter and nucleons, using ultra-high energy cosmic ray acceleration as a probe.

      Research#physics🔬 ResearchAnalyzed: Jan 4, 2026 10:06

      Closer look at enhanced three-nucleon forces

      Published:Dec 16, 2025 06:00
      1 min read
      ArXiv

      Analysis

      This article reports on research concerning three-nucleon forces, likely focusing on advancements or refinements in understanding these forces. The source, ArXiv, suggests this is a pre-print or research paper. The title indicates a focus on improvements or a more detailed analysis of these forces.

      Key Takeaways

        Reference